<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
  <script>
      function f3(x,y){
          var count=0;
          for(var i=x;i<=y;i++){
              for(var j=x;j<=y;j++){
                  var str=Number(i+""+j);
                  if(str%2!=0&&i!=j){
                      console.log(i+""+j);
                      count++;
                  }
              }
          }
      }
  </script>

</body>
</html>